Improvement in bellows



I. AGNEW. BELLoWs.

No. 193,907. Patented Ang. 7,1877.

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N, PETERS, PHOTQ-LHHOGRAPHER. wAsHsNGToN D C UNITEE STATES PATENTOFFICE.

JOHN AGNEW, OF PITTSBURG, PENNSYLVANIA, ASSIGNOB OF ONE-HALF HIS RIGHTTO WILLIAM W. SOMMERVILLE, OF SAME PLACE.

IMPROVEMENT IN BELLWS.

Specication forming part of Letters Patent No. 193,907, dated August 7,1877; application tiled July 5, 1877.

To all whom it may concern Beit known that I, JOHN AGNEW, of Pittsburg,inthe county of Allegheny and State of Pennsylvania, have invented acertain new and useful Improvement in Bellows; and I do hereby declarethe following to be a full, clear, and exact description of theinvention, such as will enable others skilled in the art to which itpertains to make and use it, reference being had t0 the accompanyingdrawings, which form part of this specilication, in4 which- Figure 1shows, respectively, a side elevation, longitudinal section, and endview of my improved bellows-nozzle. Fig. 2 shows the head of a bellowswith my nozzle attached. Fig. 3 is a top view of a blacksmiths bellows,exhibiting my invention. 'l

This invention relates to the construction of blaoksmiths bellows; andconsists in replacing the old conical smooth nozzle by a screwthreadedone, and in the specific construction of the same, whereby the bellowsis better adapted for use in certain industries.

At nearly every oil-well in the oil-producing. regions a forge ismaintained for the purposes of repairs and construction of tools orappliances; but, ou account of the danger ofconilagration, the forgemust be located some distance from the well, while, at the same time, itis the general custom to place the bellows on or under the derrick,where it can be operated by the walking-beam, or other part of themachinery, connecting-pipes being arranged from the bellows-nozzle tothe forge. This has been done by taking the well tubing or casing,(quantities of which are usually on hand,) inserting the conical smoothnozzle into one end, and packing the joint. This is a very crude way ofdoing, and is seldom airtight, is weak, and the consequence is anirregular and unreliable blast at the forge.

This defect I desire to overcome by my invention, which is as follows: Itit the head A of the bellows with a nozzle, B, projecting but slightly,and provided witha thread or threads, either exterior or interior, orboth. The object of an outer and inner thread is to provide a -means ofattaching either a piece of tubing or casing, according to which is onhand and to be spared, the two being of different sizes.

The part of Vnozzle B which is fitted into the head A is slightlyconical, and has one or more inclined lugs or wings, b, longitudinallydisposed on its surface. The head A is bored out to receive it, andrecessed for the lugs b. It is firmly driven into the head, where thelugs prevent it from turning when making the connection with theblast-conductors. (lonstructed thus, no trouble is met in connecting.

Quantities of both tubing and casing are always at hand, and it issimply necessary to screw either of them on the nozzle to make a firm,substantial, and air-tight connection, which will not work loose norrequire attention 5 hence the forge-blast will be regular and reliable-amatter ot'im portance, because often a great deal depends upon the speedwith which repairs or alterations can be effected.

What I claim as my invention is- The combination of the bored-out head Aand the threaded nozzle B, having one or more longitudinal lugs, b,substantially as specified.

In testimony that I claim the foregoing I have hereunto set my hand this27th day'of June, 1877.

JOHN AGN EW.

Witnesses:

A. V. D. WATTERSON, MARSHALL BROWN.

